AD 86-01-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Parker Hannifin Corporation | Dry Air Pumps | Airworthiness Directives; AIRBORNE DIVISION, PARKER HANNIFIN CORPORATION Airborne Dry Air Pumps and Auxiliary Dry Air Pumps |
Unsafe Condition
Premature failure of the Airborne Dry Air Pumps and Auxiliary Dry Air Pumps could occur, leading to potential inoperability of systems dependent on dry air supply, such as instruments requiring vacuum or pressurized air for operation in instrument flight rules (IFR) conditions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect installed dry air pumps to determine if they are subject pumps. If installed, fabricate and install a placard prohibiting IFR flight or warning of standby vacuum system inoperability. Replace the subject pump within 15 or 30 days of the AD's effective date, depending on pump type, and return the pump to Airborne as per Service Letter No. 30. Compliance may be achieved via an equivalent method approved by the Chicago Aircraft Certification Office.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to further flight in IFR conditions and within 15 or 30 days of the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Parker Hannifin Corporation Airborne Division Dry Air Pumps and Auxiliary Dry Air Pumps with specific part numbers and serial ranges listed in the AD, installed on piston engine airplanes certificated in any category. Excludes pumps installed before September 1, 1985, and those reworked by Airborne with a white date code.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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